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Fix off-by-one storage problem in irange_allocator.

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gcc/ChangeLog:

	* value-range.h (irange_allocator::allocate): Increase
	newir storage by one.
This commit is contained in:
Aldy Hernandez 2020-10-06 08:21:56 +02:00
parent 44e20dce59
commit 952adf0218
1 changed files with 1 additions and 1 deletions
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2
gcc/value-range.h
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@ -670,7 +670,7 @@ irange_allocator::allocate (unsigned num_pairs)
struct newir {
irange range;
tree mem[1];
tree mem[2];
};
size_t nbytes = (sizeof (newir) + sizeof (tree) * 2 * (num_pairs - 1));
struct newir *r = (newir *) obstack_alloc (&m_obstack, nbytes);